I have an Arduino project where I am using an ESP8266 (Wemos D1 mini) powered via USB. I want/need to output an analog voltage from 0 to 10V.
A solution that is pre-made (eg a shield or sparkfun type module) or easy to build circuit that does not require a new power supply (besides the ones I have which is 3.3V and 5V, thanks to Wemos USB power).
What would be the easiest solution to generate a 1-10 Volt signal? Is there a module I can use?
I read about Op-amps but I don't yet have the knowledge to build one myself. Another method is a DAC, but that seems to require a separate 10 Volt power supply.